Leviticus 17:10-12
Eating Blood and Carcasses Prohibited
10 “Anyone from the house of Israel or from the foreigners who live among them who eats any blood,(A) I will turn(a) against that person who eats blood and cut him off from his people.
11 For the life of a creature is in the blood, and I have appointed it to you to make atonement on the altar for(b) your lives, since it is the lifeblood that makes atonement.(B)
12 Therefore I say to the Israelites: None of you and no foreigner who lives among you may eat blood.